Remove all DAG servers

I deleted the DAG connections, now I need to remove the witness and DAG servers. How is this done? Using Exchange 2010. I have one server/witness server  in the Hub transport area and the client access server. I need to delete these servers from the exchange service  and from the active directory.
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cyberservicesAsked:
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Simon Butler (Sembee)ConsultantCommented:
The only supported way to remove servers is via add/remove programs. Therefore on the servers in question, run add/remove programs, choose Exchange 2010 and follow the prompts. Once Exchange has been removed, restart the server and the Exchange Management Console on the other servers and they should be gone.

After that drop the machines in to a workgroup and shut them down. The AD accounts can then be removed from ADUC.

Simon.
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cyberservicesAuthor Commented:
The second DAG and witness servers have been uninstalled and decommissioned however they still remain in those sections as stated. How would you manually remove them. Also because they are still they I can't extend the schema for Exchange 2013 because it still thinks they are there.
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cyberservicesAuthor Commented:
The one DAG server still exists under server configuration > Client Access

They both still are located under Server configuration > Hub transport
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Simon Butler (Sembee)ConsultantCommented:
Have you restarted all of the services on the existing Exchange servers?
Did the uninstall complete successfully with no errors? Were the Exchange servers connected to the network when they were removed?

This isn't a simple "remove" of the servers from the console to continue. Exchange is heavily integrated with Active Directory and if they are still showing then they were not removed correctly.

How long ago were those servers removed?

Strictly speaking a hub transport server has nothing to do with a DAG, neither does a Client Access server. Therefore referring to them as members of the DAG is incorrect. You may have used them as the FSW, but that is outside of the Exchange functionality they had.

Simon.
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cyberservicesAuthor Commented:
It seemed that I didn't have any errors when the DAG was removed. This action was done months ago.
Still don't know how to remove them out of the Exchange realm.
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Simon Butler (Sembee)ConsultantCommented:
"It seemed that I didn't have any errors when the DAG was removed."

You are confusing terms.

I am not referring to the DAG removal, I am referring to Exchange being removed.
I suspect that you may not have removed Exchange from the servers.
This is not a single click and they are gone modification.

Do the AD accounts for the computers still exist? If they do, DO NOT DELETE them.
If they don't, then you are looking at a more significant problem.

Simon.
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cyberservicesAuthor Commented:
Maybe at this point I need to either figure out to remove them or create a new exchange on premise forest to the Exchange Management. But I still think I'll run into difficultly with extending the schema because AD thinks those servers are still online.
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Simon Butler (Sembee)ConsultantCommented:
If the AD account still exists for those computers, then removal is trivial.
Build a new temporary machine of the same OS, reset the computer account (DO NOT DELETE) and add it to the domain. Install Exchange 2010 using the same version as they claim to be (I guess they must be pre-SP3 for Exchange 2013 to complain) using the command line recovery switches. Once complete, remove them using add/remove programs. They will then come out correctly.

Simon.
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cyberservicesAuthor Commented:
In AD I checked under the OU Microsoft Exchange Security groups > Exchange servers. the only one there is the current online one. I also checked the other groups and in the Exchange trusted subsystem the online server is in there.
Also in Hygiene Management. the other offline exchange servers are not listed anywhere in this OU or in AD.
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cyberservicesAuthor Commented:
OK I'll do same and post back.
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cyberservicesAuthor Commented:
What is the command line recovery switches? Once complete, remove them using add/remove programs is this done just by uninstalling exchange? Also use the same name of the servers that are already in there?
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Simon Butler (Sembee)ConsultantCommented:
I don't understand what you are asking:

"Also use the same name of the servers that are already in there? "

"Once complete, remove them using add/remove programs is this done just by uninstalling exchange?"

Yes.

Recovery of the Exchange server is explained on TechNet.
https://technet.microsoft.com/en-GB/library/dd876880(v=exchg.141).aspx

Simon.
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cyberservicesAuthor Commented:
got it. I'm installing the witness server first which is listed with Hub transport only. then I'll try to connect then uninstall it first to see if it comes out.
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cyberservicesAuthor Commented:
I'm trying to install the first server using recovery back into the domain. In the cmd box everything looks OK except that the Hub transport server role is stuck at 98%. I checked services and AD topology is trying to start. the other Exchange services have not started yet. Should I just let it sit there and wait it out?
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cyberservicesAuthor Commented:
The installation of the Hub Transport Server Role because of the AD topology service not starting. Error message below. I then went in and started the service and then restarted the recover. I'll keep you posted.


Hub Transport Server Role                                 FAILED
     The following error was generated when "$error.Clear();
          if ($exsSid -eq $null -or $exsSid -eq "")
          {
          $exsSid = get-ExchangeServerGroupSID -DomainController $RoleDomainCont
roller
          }
          start-setupservice -ServiceName MSExchangeADTopology -ServiceParameter
s $exsSid,$RoleDomainController
        " was run: "Service 'MSExchangeADTopology' failed to reach status 'Runni
ng' on this server.".


The Exchange Server setup operation didn't complete. More details can be found
in ExchangeSetup.log located in the <SystemDrive>:\ExchangeSetupLogs folder.

Exchange Server setup encountered an error.
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Simon Butler (Sembee)ConsultantCommented:
You reset the computer account before adding the replacement server to the domain?
Are you using the same version of Exchange as it was originally?

get-exchangeserver will show the Exchange server and version. With Exchange 2010, 14.1 is SP1, 14.2 SP2 etc.

If you reboot the server and try again, does it work then?
Correct network settings, DNS servers etc?

Simon.
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cyberservicesAuthor Commented:
Here is the latest:


The following server roles will be recovered
Languages
Hub Transport Role
Management Tools

Performing Microsoft Exchange Server Prerequisite Check

    Configuring Prerequisites                                 COMPLETED
    Language Pack Checks                                      FAILED
     A Setup failure previously occurred while installing the HubTransport role.
 Either run Setup again for just this role, or remove the role using Control Pan
el.

I tried removing it from control panel but it states the you can't resume setup by performing the action install.
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cyberservicesAuthor Commented:
You reset the computer account before adding the replacement server to the domain?
Yes.


 Are you using the same version of Exchange as it was originally?
Yes

 get-exchangeserver will show the Exchange server and version. With Exchange 2010, 14.1 is SP1, 14.2 SP2 etc.
In the EMC I can see the version. The two old servers have 14.1 (build 218.15)  The one currently running is Version 14.3 (Build 123.4)  I'm installing Exchange 2010 SP1 which I believe  is the old exchange server version.

 If you reboot the server and try again, does it work then?
Rebooting and trying again.

 Correct network settings, DNS servers etc?
The network settings are correct. I put the same IP on it as it was in the past. Correct DNS servers are configured.
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Simon Butler (Sembee)ConsultantCommented:
Ensure the server in question is a member of the Exchange Servers and Exchange Domain Servers Group.
If it is not, add the server to the group, wait 10 minutes or so and then reboot and try again.

If it still fails then you need to remove the watermark and action entries.
This should be in the following location in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v14\HubTransportRole

Then try again.

Simon.
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cyberservicesAuthor Commented:
Whoa.  I rebooted the server, checked all the services and they are all started to include the exchange services.
It also installed EMC and it worked.
I did add the server to the Exchange Groups you stated.

How do I know that the hub transport installed?
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cyberservicesAuthor Commented:
I used the EMC went to Server Configuration > hub transport  because that is the only location I could find the old witness server in the EMC and went to the properties of the old witness server, on the general tab it shows role hub transport with a modified date of today. Does this mean it installed as plan based on the reboot? Also is it ready to deinstall and get it out of the exchange enterprise?
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cyberservicesAuthor Commented:
I also checked the registry and the action and watermark entries are in there. Should I remove them?
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Simon Butler (Sembee)ConsultantCommented:
I would suggest you try removing Exchange. If it fails, then you will need to remove those two registry entries to get it to work correctly.

Simon.
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cyberservicesAuthor Commented:
Success with one of the exchange servers (witness server) I did have to remove the two registry entries.

On to the next one.
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cyberservicesAuthor Commented:
Your method was a success for removing both servers
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